A tarsier has too large eyes to move them.

From "An Encyclopedia Of Unfortunate Creatures"

But it can work at night because it can collect a lot of light. If you confine stinkbugs, their smell is so bad that they lose consciousness (so their enemies cannot get close to them). A giant
head turtle has a too big head to fit into the shell (but it is quick to run away because the shell is light ). Have any living creatures managed to survive by combining their abilities and the
environment being unable to measure the balance between them? A zoologist Tadaaki Imaizumi supervised the encyclopedia.